Biomass yield and energy balance of three perennial crops for energy use in the semi-arid Mediterranean environment
Biomass yield and energy balance of three perennial crops for energy use in the semi-arid Mediterranean environment
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DOI：
10.1016/j.fcr.2009.07.020
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发表时间：
2009-11
影响因子：
5.8
通讯作者：
M. Mantineo;G. D'agosta;V. Copani;C. Patané;S. Cosentino
中科院分区：
文献类型：
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作者：
M. Mantineo;G. D'agosta;V. Copani;C. Patané;S. Cosentino
对三种不同的木质纤维素能源作物（Arundo donax L.、Miscanthus x giganteus Greef et Deu. 和 Cynara cardunculus L. var. altilis D.C. cv. “Cardo gigante inerme”的本地克隆）进行了 5 年（2002-2007 年）作物产量、净能源产量和能源比的比较。在西西里岛（意大利）的丘陵内陆地区，在裂区实验中评估了两种不同的灌溉处理（ETm 恢复的 75% 和 25%）和两种施氮水平（100 和 50kgha−1）。在田间试验的第四年和第五年（2005-2007），没有使用肥料或灌溉。从作物定植到第三年，地上干物质产量在所有研究因素中均有所增加，A. donax从6.1增加到38.8tha−1，M. x giganteus从2.5增加到26.9tha−1。播种后 15 个月，C. cardunculus 产量为 24.7tha−1of d.m。第三年下降到 8.0tha−1。第四年和第五年，所有作物地上干物质产量均下降，但A. donax和M. x giganteus这两年仍保持较高的生产力水平。相比之下，C. cardunculus 的产量下降至 1tha−1of d.m 以下。到第四年。 A. donax 和 M. x giganteus 在建立当年的能量输入高于 C. cardunculus（A. donax 和 M. x giganteus 为 34GJha−1，C. cardunculus 为 12GJha−1），主要是由于灌溉。 A. donax 和 M. x giganteus 在建立当年的净能量产量显示出较低或负值。第二年和第三年，A. donax 的净能量产量异常高（分别为 487.2 和 611.5GJha−1），而 M x giganteus 的净能量产量较低（分别为 232.2 和 425.9GJha−1）。 M x giganteus 在第四年达到了最高的净能量产量（447.2GJha−1）。 C. cardunculus 的净能量产量反映了作物的能量输出，第一年比随后几年高（第一年、第二年和第三年分别为 364.7、277.0 和 119.2GJha−1）。不同灌溉处理对所有物种的所有研究参数都有显着影响。相反，只有 A. donax 受到氮肥的影响。
Three different lignocellulosic energy crops (a local clone of Arundo donax L., Miscanthus x giganteus Greef et Deu. and Cynara cardunculus L. var. altilis D.C. cv. “Cardo gigante inerme”) were compared over 5 years (2002–2007) for crop yield, net energy yield and energy ratio. In a hilly interior area of Sicily (Italy), two different irrigation treatments (75 and 25% of ETm restoration) and two nitrogen fertilization levels (100 and 50kgha−1) were evaluated in a split-plot experiment. In the fourth and fifth years of the field experiment (2005–2007) no fertilizer or irrigation was used. From crop establishment to the third year, above ground dry matter yield increased over all studied factors, in A. donax from 6.1 to 38.8tha−1and in M. x giganteus from 2.5 to 26.9tha−1. Fifteen months after sowing, C. cardunculus yielded 24.7tha−1of d.m. decreasing to 8.0tha−1in the third year. In the fourth and fifth years, above ground dry matter yields of all crops decreased, but A. donax and M. x giganteus still maintained high productivity levels in both years. By contrast the yield of C. cardunculus yield fell to less than 1tha−1of d.m. by the fourth year. Energy inputs of A. donax and M. x giganteus were higher in the year of establishment than that of C. cardunculus (34GJha−1for A. donax and M. x giganteus and 12GJha−1for C. cardunculus), mainly due to irrigation. Net energy yield showed low or negative values in the establishment year in A. donax and M. x giganteus. In the second and third year, net energy yield of A. donax was exceptionally high (487.2 and 611.5GJha−1, respectively), whilst M x giganteus had lower values (232.2 and 425.9GJha−1, respectively). M x giganteus attained its highest net energy yield in the fourth year (447.2GJha−1). Net energy yield of C. cardunculus reflected energy output of the crop, being high in the first compared to subsequent years (364.7, 277.0 and 119.2GJha−1, respectively for the first, second and third years). A significant effect of the different irrigation treatments was noted on all the studied parameters in all species. Conversely, only A. donax was affected by nitrogen fertilization.